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Some Aspects of Assessing the Radiation Situation under Nominal NPP Emissions

  • Environmental Problems
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Abstract

The results of assessing the radiation situation under nominal NPP emissions are presented. A decrease in the activity of normalized nominal emissions from NPPs with PWR reactors (the domestic analogue is VVER) over the past 50 years is shown. The annual activity of nominal emissions from nuclear power plants with various types of reactors is significantly lower compared to the formation of radionuclides in the environment owing to natural processes and their input during global and emergency fallouts, as well as the reprocessing of spent nuclear fuel at radiochemical plants. The indicators of the radiation situation in the zone of nominal NPP emissions are predicted by the example of the Leningrad NPP-2. It has been established that the highest volumetric activity of radionuclides in the daily emission cloud is likely at a distance of 1–2 km from the plant. Over the 60 years of the NPP’s operation, the 137Cs input into the soil should not have exceeded 6 Bq/m2, which is almost two mathematical orders of magnitude lower than the content from global fallout. In the zone of a nominal emission, additional external exposure will not exceed 2% relative to the natural radiation background.

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Authors and Affiliations

  1. Russian Institute of Radiology and Agroecology, Obninsk, Russia

    A. N. Perevolotskii & T. V. Perevolotskaya

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  1. A. N. Perevolotskii
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  2. T. V. Perevolotskaya
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Correspondence to A. N. Perevolotskii or T. V. Perevolotskaya.

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Translated by B. Alekseev

Aleksandr Nikolaevich Perevolotskii, Dr. Sci. (Biol.), is a Leading Researcher at the Laboratory of Mathematical Modeling and Software and Information Support at the Russian Institute of Radiology and Agroecology (RIRAE). Tat’yana Vital’evna Perevolotskaya, Cand. Sci. (Biol.), is an Associate Professor and a Senior Researcher at the same RIRAE laboratory.

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Perevolotskii, A.N., Perevolotskaya, T.V. Some Aspects of Assessing the Radiation Situation under Nominal NPP Emissions. Her. Russ. Acad. Sci. 91, 482–491 (2021). https://doi.org/10.1134/S1019331621040079

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